Watts valpes VRA Mode D'emploi page 18

VRA and VSA POSI actuators
Description
Actuator CSA series with advanced and friendly positioning solution, allowing the control of a valve with a signal: 0-10V, 4-
20mA or 0-20mA. For applications like dosing, modulating, flow control,
filling up (increases the accuracy in the last stage), mixing...
Advantages
 All in one: no additional wiring required
 Cost effective
 Microprocessor base
 Secured process (memorization loops)
 Self configurable (0-20mA/4-20mA/0-10V)
 Reversible (exemple : 20-4mA)
 Training mode
 Anti condensation heater
 Electronic torque limiter
 Failure feedback relay
 Rotation up to 180° or 270° (on request)
 Preset from factory
Working principle
Please consider 1.5 safety factor (and 2.0 safety factor for POSI version) when sizing the actuator
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